Loose pick shearing device for looms



Nov. 5, 1957 E. J. LE BLANC 2,311,987

LOOSE PICK SHEARING DEVICE FOR LOOMS Filed July 8, 1955 2 Sheets-Sheet 1 Y JNVENTOR Emvzsr J. LE 844m Nov. 5, 1957 E. J. LE BLANC 2,811,987

LOOSE PICK SHEARING DEVICE FOR LOOMS Filed July 8, 1955 2 Sheets-Sheet 2 INVENTOK R/VEST J. 15 8mm ATTOR EV nited States Patent r LOOSE PICK SHEARING DEVICE FOR LOOMS Ernest J. LeBlanc, East Brookfield, Mass.

Application July 8, 1955, Serial No. 520,699

9 Claims. (Cl. 139-291) This invention relates to improvements in looms and has particular reference to the provision of novel means for removing floating picks resulting from single pick weaving.

In single pick weaving, because of the fact that the loom has but one shuttle box on one end thereof, and in order to have the shuttle return without producing a .double pick in the weave, the harnesses have to be dropped whereby the shuttle on its return trip across the lay will ride over the warp threads and thereby produce floating picks. Before further processing of the cloth these loose picks must be removed and it, therefore, is one of the primary objects of this invention to provide novel means for automatically cutting and freeing these floating picks from the cloth during the operation of the loom.

Another object is to provide simultaneously functioning means for cutting the opposed ends ,of the floating picks adjacent the side edges of the cloth during the operation of the loom.

Another object is to provide simultaneously functioning cutting devices of the above character having incorporated therewith means for directing the floating picks into the cutting means.

Another object is to provide cutting devices of the above character which may be adjusted to accommodate for the weaving of cloth of different widths.

Another object is to provide means in a device of .the above character for guiding and retaining the opposed side edges of the woven cloth in proper relation with the cutting means.

Other objects and advantages of the invention will become apparent from the following description when taken in connection with the accompanying drawings wherein:

Fig. l is a fragmentary diagrammatic front elevational View illustrating the positional relation .of the devices embodying the invention with the cloth;

Fig. 2 is an enlarged fragmentary plan view of .one of the devices embodying the invention;

Fig. 3 is a perspective view of one of said devices illustrating its position of use;

Fig. 4 is an enlarged sectional view taken as on line 44 of Fig. 2; and

Fig. 5 is a fragmentary view of a slight modification of the invention.

The devices embodying the invention, as shown best in Figs. 1 and 3, function simultaneously as a pair secured to the front or breast beam of the loom immediately outwardly of the side edges of the cloth being woven. The said devices each comprise a plate '11 secured to the front surface of the front or breast beam of the loom by screws or the like 12 and each having .a guide track 13 slidably fitting within a guideway 14 formed in a bracket 15.

The guide track 13 is provided with a longitudinal slot 16. Connection bolts or the like 17 are extended through said brackets 15 and said slots 16 to secure the brackets to the plates 11 in proper spaced relation with each other in accordance with the width of the cloth being woven.

2,811,987 Patented Nov. 5, 1957 The brackets 15 each have an undercut area 18 to provide a space between said brackets 15 and plates 11 through which the opposed side edges 19 of the woven cloth is fed during the weaving thereof. The adjustment of the brackets 15 is to position said undercut areas in proper overlapping relation with the adjacent edges of the cloth. Each bracket 15 has an angularly disposed portion 20 on its inner end and each portion 20 has a recessed area 21 in the inner side surface thereof in which is fitted a cutting plate 22.

The cutting plates 22 are secured to the recessed areas 21 by screws or the like 23 and are each provided with a rearwardly disposed cutting edge 24 adapted to function cooperatively with the cutting edge 25 of a cutter blade 26 pivotally attached to the plate 22 by a bolt or the like 27. The respective cutter blades 26 have a lever section 28 pivotally attached at the outer ends 29 thereof to link rods 30. The said link rods 30 are, in turn, eccentrically pivotally attached at 31 to collar members 32 carried by the conventional rocker shaft 33 at bottom of the loom and on which the lay of the loom is pivoted for swinging movement. The rocker shaft 33 rocks rearwardly and forwardly a given amount in a conventional manner during the operation of the lay of the loom and this motion is transmitted to the respective cutter blades through the above mechanism to cause the cutter blades to accordingly open and close and thereby simultaneously sever the loose or floating picks.

Each of the cutting devices is provided with a thread guide member 34 in the form of a resilient wire loop hav-' ing one end 35 thereof coiled about the pivot bolt 27 and its opposed end 36 secured between the cutter plate 22 and the recessed area 21 so as to retain the said coil in resilient pressure engagement with the surface of the cloth. As the cloth is advanced during the weaving operation the thread guide members 34 automatically extend beneath the floating picks 37 and guide them between the respective cutting edges 24 and 25 of the plates 22 and cutter blades 26.

The severed floating pick is then free to drop under gravity or to otherwise be removed whereby the next floating pick may be automatically picked up and severed at its opposed ends by the cutting devices. The simultaneous severing of the opposed ends of the floating picks results from the simultaneous response of the cutter blades to th movement of the rocker shaft.

in Fig. 5 there is shown a slight modification of the invention wherein instead of utilizing a looped wire as the guide member, said guide member comprises a spring blade .38 attached at its lower end 39 to the pivot bolt 27 and which has its inner side edge cut away for clearance of the cutter blade 26. Here, again, the spring blade 38 is adapted to have resilient contact with the surface of the cloth so as to extend beneath the floating picks as they are advanced by forward movement of the cloth during the weaving operation and are so shaped and positioned with respect to the cutter blades 26 as to cause the ends of the floating picks to be guided between the said cutter blades 26 and the adjacent cutting edges 24 of the plates 22.

From the foregoing description, it will be seen that simple, efficient and economical means have been provided for accomplishing all of the objects and advantages of the invention. However, it is to be understood that various omissions, substitutions and changes in the form and details of the embodiments shown and described may be made by those skilled in the art without departing from the spirit of the invention as expressed in the accompanying claims and that all matter herein is to be interpreted as illustrative and not in a limiting sense.

Having described my invention I claim:

'1. A device for cutting the floating picks from the woven cloth of a single pick loom comprising a platelike member secured to the front of the loom, a bracket adjustably supported on said member, said bracket having an angularly disposed portion, a cutting plate secured to said angularly disposed portion, said plate having a cutting edge, a pivotally supported cutting blade adjacent said cutting plate and having a cutting edge for cooperative function with the cutting edge of said plate and a lever portion pivotally connected adjacent its free endto a link rod, said link rod having its opposed end eccentrically pivotally connected to a member carried by the lay supporting rocker shaft of the loom and a guide member associated with said cutting blade for guiding the floating picks between the cutting edges of the respective cutting blade and cutting plate.

2. A device for cutting the floating picks from the woven cloth of a single pick loom comprising a pair of spaced platelike members secured to the front surface of'the breast beam of the loom, one adjacent each respective side of the cloth, each of said platelike members having a longitudinal slot therein, a bracket mounted on each of said platelike members by a bolt extending through said longitudinal slot, said brackets each having an angular disposed portion on the sides thereof adjacent the respective edges of the woven cloth, a cutting plate secured to each of said angularly disposed portions, a cutting blade pivotally connected with each of said cutting plates, said cutting blades having a cutting edge for cooperative function with the cutting edge of the adjacent plate, said cutting blades each having a lever portion pivotally connected adjacent its free end to a link rod, said link rods having their opposed ends eccentrically connected with the lay supporting rocker shaft of the loom and a guide member associated with said cutting blades for guiding the adjacent ends of the floating picks between said cutting edges of the respective cutting blades and cutting plates.

3; A device for cutting the floating picks from the woven cloth of a single pick loom comprising a platelike member secured to the breast beam of the loom, a bracket supported on said member, said bracket having an angularly disposed portion and a recessed area rearwardly of said angularly disposed portion through which the adjacent edge of cloth is moved, a cutting plate secured to said angularly disposed portion, said plate having a cutting edge, a cutting blade pivotally connected with said cutting plate and having a cutting edge for cooperative function with the cutting edge of said plate, said cutting member having a lever portion pivotally connected to a link rod, said link rod having its opposed end pivotally connected to a member carried by the rocker shaft on which the lay of the loom is pivoted and a resilient guide member associated with said cutting blade for engaging and guiding the floating picks between the cutting edges of the respective cutting member and cutting plate.

4. A device for cutting the floating picks from the woven cloth of a single pick loom comprising a pair of platelike members secured to the front surface of the breast beam of the loom, one adjacent each respective side of the cloth, each platelike member having a guideway extending longitudinally thereof and a longitudinal slot in said guideway, a bracket having a part adjustably mounted in the guideway of each of said platelike members and secured in adjusted position by a bolt extending through said longitudinal slot, said brackets each having an angularly disposed portion on the sides thereof adjacent the respective edges of the woven cloth and recessed areas rearwardly of said angularly disposed portions through which said adjacent edges of the cloth is moved, a cutting plate secured to each of said angularly disposed portions, a cutting blade pivotally connected with each of said cutting plates, said cutting blades having a cutting edge for cooperative function with the cutting edge of the adjacent plate, said cutting blades each having a lever portion pivotally connected adjacent its free end to a link rod, said link rods having their opposed ends eccentrically connected with the lay supporting rocker shaft of the loom and a resilient guide member associated with said cutting blades for guiding the adjacent ends of the floating picks between said cutting edges of the respective cutting blades and cutting plates.

5. A device for cutting the floating picks from the woven cloth of a single pick loom comprising a pair of platelike members secured to the front surface of the breast beam of the loom, one adjacent each respective side of the cloth, each platelike member having a guideway extending longitudinally thereof and a longitudinal slot in said guideway, a bracket having a part adjustably mounted in the guideway of each of said platelike members and secured in adjusted position by a bolt extending through said longitudinal slot, said brackets each having an angularly disposed portion on the sides thereof adjacent the respective edges of the woven cloth and recessed areas rearwardly of said angularly disposed portions through which said adjacent edges of the cloth is moved, a cutting plate secured to each of said angularly disposed portions, a cutting blade pivotally connected with each of said cutting plates, said cutting blades having a cutting edge for cooperative function with the cutting edge of the adjacent plate, said cutting blades each having a lever portion pivotally connected adjacent its free end to a link rod, said link rods having their opposed ends eccentrically connected with the lay supporting rocker shaft of the loom and a resilient guide member associated with said cutting blades for guiding the adjacent ends of the floating picks between said cutting edges of the respective cutting blades and cutting plates, said guide member comprising a looped wire having one end secured to the pivotal connection for the cutting blade and its opposed end secured beneath the cutting plate.

6. A device for cutting the floating picks from the woven cloth of a single pick loom comprising a plate secured to the breast beam of the loom, said plate having a guideway extending longitudinally thereof and a longitudinal slot in said guideway, a bracket having a part adjustably mounted in said guideway, a bolt extending through said bracket and into said slot for securing said bracket in adjusted position, said bracket having an angularly disposed portion with a cutting plate thereon having a cutting edge, a pivotally supported cutting blade adjacent said cutting plate and having a cutting edge for cooperative function with the cutting edge of said plate and a lever portion pivotally connected to a link rod, said link rod having its opposed end pivotally connected to a member carried by the lay supporting rocker shaft of a loom and a guide member associated with said cutting member for guiding the floating picks between the cutting edges of the respective cutting blade and cutting plate.

7. A device for cutting the floating picks from the woven cloth of a single pick loom comprising a member secured to the breast beam of the loom having a cutting plate thereon, said plate having a cutting edge, a pivotally supported cutting blade adjacent said cutting plate and having a cutting edge for cooperative function with the cutting edge of said plate and a lever portion pivotally connected adjacent its free end to a link rod, said link rod having its opposed end eccentrically pivotally connected to the lay supporting rocker shaft of the loom for causing the pivoted cutting blade to close and open relative to the cutting edge of the plate in response to the movement of the rocker shaft.

8. A device for cutting the floating picks from the woven cloth of a single pick loom comprising a member secured to the front of the loom having a cutting plate with a cutting edge thereon, a pivotally supported cutting blade adjacent saidcutting plate and having a cutting edge for cooperative function with the cutting edge of said plate and a lever portion pivotally connected to a link rod, said, link rod having its opposed end eccentrically 'pivotally'connected to the lay supporting rocker shaft of a loom and a guide member associated with said cutting member for guiding the floating picks between the cutting edges of the respective cutting blade and cutting plate.

9. A device of the character described for use with the woven cloth of a loom comprising a member secured to the front of the loom having a cutting plate with a cutting edge thereon, a pivotally supported cutting blade adjacent said cutting plate and having a cutting edge for cooperative function with the cutting edge of said plate and a lever portion pivotally connected to a link rod, said link rod having its opposed end eccentrically pivotally connected to the lay supporting rocker shaft of a loom for causing said cutting blade to be opened and closed with respect to said cutting plate in response to the movement of the rocker shaft.

References Cited in the file of this patent UNITED STATES PATENTS 

